Did you just run into a download or a file on your computer that has a digital signature from Malware Crusher Inc? Some of the security products refers to the detected files as Program.Unwanted.3067 and PUP.Optional.PCVARK.BD. The detection rate for the Malware Crusher Inc files collected here is 3%. Please read on for more details.
You'll probably see Malware Crusher Inc when double-clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the digital signature details for Malware Crusher Inc with the following procedure:
Here's a screenshot of a file that has been digitally signed by Malware Crusher Inc:

As you can see in the screenshot above, the Windows OS states that "This digital signature is OK". This implies that the file has been published by Malware Crusher Inc and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can examine all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, etc. You can also view the address for Malware Crusher Inc, such as the street name, city and country.
COMODO RSA Code Signing CA has issued the Malware Crusher Inc certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screencap above.
These are the Malware Crusher Inc files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 2/66 | mlcsetup.exe |
Here's the detection names for the Malware Crusher Inc files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| DrWeb | Program.Unwanted.3067 |
| Malwarebytes | PUP.Optional.PCVARK.BD |
The detection percentage is based on that I've gathered 66 scan reports for the Malware Crusher Inc files. 2 of these scan results came up with some sort of detection. If you like, you can view the full details of the scan results by examining the files listed above.
The analysis has been done on certificates with the following serial numbers: